<template>
    <div class="login-container">
        <div class="login-box">
            <!-- 头像区域 -->
            <div class="avatar-box">
                <img src="../assets/logo.png" />
            </div>
            <!-- 登录表单区域 -->
            <el-form
                class="login-form"
                ref="loginFormRef"
                :model="loginForm"
                :rules="loginFormRules"
            >
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input
                        prefix-icon="iconfont icon-icon_user"
                        v-model="loginForm.username"
                    ></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input
                        prefix-icon="iconfont icon-3702mima"
                        type="password"
                        v-model="loginForm.password"
                    ></el-input>
                </el-form-item>
                <!-- 按钮区域 -->
                <el-form-item class="btns">
                    <el-button
                        type="primary"
                        @click="login"
                    >登录</el-button>
                    <el-button
                        type="info"
                        @click="resetLoginFrom"
                    >重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
import { async } from 'q'
export default {
    data () {
        return {
            // 登录表单数据绑定对象
            loginForm: {
                username: 'admin',
                password: '123456'
            },
            // 表单的验证规则对象
            loginFormRules: {
                // 验证用户名是否合法
                username: [
                    {
                        required: true,
                        message: '请输入登录名称',
                        trigger: 'blur'
                    },
                    {
                        min: 3,
                        max: 10,
                        message: '长度在 3 到 10 个字符',
                        trigger: 'blur'
                    }
                ],
                // 验证密码是否合法
                password: [
                    {
                        required: true,
                        message: '请输入登录密码',
                        trigger: 'blur'
                    },
                    {
                        min: 6,
                        max: 15,
                        message: '长度在 6 到 15 个字符',
                        trigger: 'blur'
                    }
                ]
            }
        }
    },
    methods: {
        // 点击重置按钮，重置登录表单
        resetLoginFrom () {
            this.$refs.loginFormRef.resetFields()
        },
        // 点击登录
        login () {
            this.$refs.loginFormRef.validate(valid => {
                if (!valid) {
                    return
                }
                this.$request({
                    url: 'login',
                    method: 'post',
                    params: this.loginForm
                }).then(res => {
                    this.$message.success('登录成功')
                    window.sessionStorage.setItem('token', res.token)
                    this.$router.push('/home')
                })
            })
        }
    }
}
</script>

<style lang="less" scoped>
.login-container {
    height: 100%;
    background-color: #2b4b6b;
}

.login-box {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
}

.avatar-box {
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 130px;
    height: 130px;
    padding: 10px;
    border: 1px solid #eee;
    border-radius: 50%;
    box-shadow: 0 0 10px #ddd;
    background-color: #fff;
    img {
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
}

.login-form {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}

.btns {
    display: flex;
    justify-content: flex-end;
}
</style>
